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#1 |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Our Heavy Duty Headlight Harness specifically designed for the 67-72 GMC trucks with dual headlights. Our HD Headlight Harness's are the top of the line, and are constructed with quality materials. They are 100% "Plug n' Play" so there is no need to cut or splice any wires what so ever. They feature 4 HD Ceramic H4 Headlight plugs, to ensure a long life and can handle very high wattage bulbs. The standard high beam bulbs on the GMC's utilized a 2 prong plug from the factory, our harness utilizes a standard 3 prong H4 plug, one pin within the the plug simply doesn't get used on the high beams. The harness will work with any headlight set up that utilizes a H4 style plug (eg. Sealed beam, Halogen, HID). With this harness installed, it will draw your power for your headlights directly from the battery (taking all the load off of your OE Headlight switch) and give your headlight the full 13.8V+ they need to run at 100% and give you a very large upgrade in light output!
------------------------------------------------------------- Below are a few of the benefits of upgrading your headlight Harness:
![]() -------------------------------------------------------------------------- Regular Price: $99.95 Shipping: $9.95 via USPS Prioirity Mail to the lower 48 States ONLY Shipping to Canada: $15.99 via USPS Payment: PayPal or a US Postal Money Order To Order: Simply send us a PM with your PayPal address and we'll send you an invoice with a total via PayPal Part Number: 6772GMCHD312 ------------------------------------------------------------------------ Thanks for looking and have a great day! MADE IN THE USA ![]() |
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#2 |
bbadfred
![]() Join Date: Mar 2008
Location: rantoul Il
Posts: 461
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
I have almost 3000 miles on the truck and my LMC harness is working flawless after I Color matched the wires to the stock plug. I still do not know what I did differently than everyone else?
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#3 | |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Quote:
The difference between our harness's and the inexpensive import harness's is like the difference between apples and oranges. If there is something that we can help you with, please feel free to ask! ![]() |
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#4 |
Registered User
![]() Join Date: Mar 2012
Location: Okanagan Valley, BC, Canada
Posts: 1,237
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
The harnesses from LMC come wired incorrectly and does not work. Thats what he is talking about. Looks like this harness here is the one to get.
__________________
#teamlongbed "I refuse to go disc brakes. I actually love drum brakes. It makes for an adventure." - 50bomb 1978 Chevy shop truck - static 6/8" 1970 GMC 1500 - Accuair eLevel Resto-mod http://67-72chevytrucks.com/vboard/s...d.php?t=537497 |
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#5 |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Thanks Square, if anyone has any questins on our harness please ask.
Thanks |
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#6 |
Registered User
![]() Join Date: Jul 2012
Location: SoCal
Posts: 24
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Alright you got me. Been staring at this for over a week now. I won't need it for a couple of months and was going to wait. I would also like a set of ground straps and a power door lock kit with extra remote. Thank you.
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#7 |
Registered User
![]() Join Date: Nov 2011
Location: Williamson New York
Posts: 427
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
I'm vouching for this harness- I originally bought an LMC harness and after sending the first one back- and getting a second one that also was wired incorrectly I gave up and have been MORE than satisfied with this plug and play harness-- great product!!
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#8 | |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Quote:
Thank you very much for the kind words, we truly appreciate it. We design our products to be absoluletly as user friendly as we possibly can; and to make them with the best quality components to ensure optimal performance! If there is ever anything that you need, please don't hesitate to ask! |
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#9 |
Registered User
Join Date: Jul 2012
Location: United States
Posts: 268
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
What width are those spades that plug into the factory lamp socket to activate the relays? I could never find any wider than 0.250".
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#10 |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
The connectors that we utilize to connect the OEM headlight harness to our HD harness are specifically designed connectors for this purpose. The harness's do not use a standard readily available spade connector that you find at your local parts house.
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#11 |
Senior Member
![]() Join Date: Feb 2001
Location: New Madison, Ohio
Posts: 21,365
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
I am giving this deep consideration ....
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__________________
A husband can be right...or...A husband can be happy. ![]() 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. ![]() 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc ![]() ![]() JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! |
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#12 |
Registered User
Join Date: Apr 2013
Location: Portland, OR
Posts: 38
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
I'd like one. Pm was sent.
Posted via Mobile Device |
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#13 |
Registered User
Join Date: Apr 2013
Location: Portland, OR
Posts: 38
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Sorry, I want one for Chevy, not GMC, but still, pm sent.
Posted via Mobile Device |
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#14 |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
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#15 |
Registered User
Join Date: Nov 2005
Location: Park Rapids, MN
Posts: 288
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
hey where in central Minnesota? I would like one of these for my GMC, I might be able to just pick it up and save the shipping.
__________________
1969 K20 not running, complete but rusty with wrecker boom and push bumper 1969 GMC C20 un-molested rust free original paint "a 4 eyed girl named 'Tina" 1971 Chev K20 4X4 Box Delete Commercial Truck Flatbed "Choose a job you love, and you will never have to work a day in your life." Confucius |
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#16 |
Registered User
Join Date: Jul 2007
Location: san jose ca
Posts: 172
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
so do you have these for chevys?
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#17 |
Registered User
Join Date: Nov 2007
Location: Central Minnesota
Posts: 631
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Yes sir, we sure do! Here is the link for 67-72 Chevy's:
http://67-72chevytrucks.com/vboard/s...d.php?t=511202 |
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#18 |
Registered User
Join Date: Mar 2008
Location: St Louis, MO
Posts: 533
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
purty colurs, I am putting these on my Christmas list. which means more than likely around Christmas I will be buying a set of these as well. keep up the great work
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#19 |
Registered User
![]() Join Date: Feb 2014
Location: West Iowa
Posts: 1,106
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
This members last activity on this site was 4/23/2014. Doubt you will get a response.
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#20 |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Damn, I cant find the light harness from anyone else other than LMC and everyone says they suck lol. Thank you for letting me know.
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#21 |
Senior Member
![]() Join Date: Nov 2019
Location: Cocoa FL
Posts: 596
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
They don't suck, they just need to have some wires switched around to make them work properly. I have the LMC harness and after I swapped the wires it works fine. I forget the exact swap, but I'll see if I can dig up the info.
__________________
Die with memories, not dreams. Not to brag, but I don't need alcohol to make really bad decisions. 1969 GMC Short Step Side |
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#22 | |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Quote:
That would awesome, thank you. I was gonna purchase anyway and hope for the best lol |
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#23 |
Registered User
Join Date: Nov 2019
Location: Eagle River Alaska
Posts: 320
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
That would be really helpful thank you.
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#24 |
Senior Member
![]() Join Date: Nov 2019
Location: Cocoa FL
Posts: 596
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
I remembered I had received a PM from mygmctruck1 explaining how to correct it.
Here it is below - all credit goes to to mygmctruck1: On the low beam / high beam plug. The correct wiring is as follows. Looking at the back where the wires go in. * The Black (gr) wire goes in the left slot * The Brown / Tan wire low beam goes in the top slot * The Green wire hi beam. Goes in the right slot ** Both of the 3 wire 3 prong plugs need this change No change is needed with the 2 wire plug LMC wired it this way - looking at the back. The Brown wire is in the left slot The Black (gr) wire is in the right slot The Green wire is in the top center slot
__________________
Die with memories, not dreams. Not to brag, but I don't need alcohol to make really bad decisions. 1969 GMC Short Step Side |
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#25 |
Registered User
Join Date: Jan 2018
Location: TN
Posts: 263
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Re: 1967 - 1972 GMC Heavy Duty Headlight Harness
Hi. I attempted to place an order for the harness but the site said your inbox was full. Is there another way I could get in contact with you guys. Thanks.
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Tags |
harness, headlight, mod, relay, wiring |
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